Improved bind test causes crash

[hadley]

test_that("bind_rows handles data frames with no columns (#1346)", {
  df1 <- data_frame(x = 1, y = factor("a"))
  df0 <- df1[, 0]

  expect_equal(bind_rows(df0), df0)
  expect_equal(bind_rows(df0, df0), df0)
  expect_equal(bind_rows(df0, df1), df1)
})

(should go in test-binds.R, in rows section)

[romainfrancois]

The problem was actually that equal_data_frame did not handle data frames with 0 columns. This is fixed now.

However, I cannot fold the tests in as is, e.g bind_rows(df0, df0) makes a df with 2 rows instead of 1, since df0 has 1 row.

[hadley]

Oh, good point. I'll fix the test